ASTROSAT CZTI

Data Quality Report

Orbit 40690

Creation date: 2024-06-27T22:19:12.007496
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_029T02_9000005558_40690cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40690cztM0_level2_quad_clean.evt
Size (bytes)369,509,76093,939,840
Size352.4 MB 89.6 MB
Events in quadrant A2,924,272640,625
Events in quadrant B3,215,696659,270
Events in quadrant C3,866,805629,462
Events in quadrant D3,237,495526,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121063
B0132052
C0150802
D0135022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5565140.251572%
B55651202.156334%
C55651703.054807%
D556567612.147350%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9149 5567 4 4 0.04% 0.07%
B 9149 5567 80 80 0.87% 1.44%
C 9149 5567 178 178 1.95% 3.20%
D 9149 5566 74 74 0.81% 1.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 497443 3892.88 624 612 127.6
A 2 79 9475 69.45 624 612 127.6
A 3 137 6925 49.46 624 612 127.6
B 0 229 375478 3150.57 621 605 119.0
B 5 255 179213 1501.09 621 605 119.0
B 0 190 77667 647.66 621 605 119.0
C 9 187 1172779 8252.2 609 613 142.0
C 15 214 242838 1705.29 609 613 142.0
C 12 249 37655 260.78 609 613 142.0
D 12 227 338553 2385.59 571 555 141.7
D 2 250 226431 1594.23 571 555 141.7
D 12 191 178518 1256.06 571 555 141.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter